Hi Su Li,

have you added the new source files to the CMakeLists.txt in lib,
include and grc?
Do these block have the YOURMODULE_API property?

Best regards,
Marcus

On 05/13/2015 06:38 PM, Su Li wrote:
> Dear All,
>
> I am trying to make an out of tree module by following the tutorial on
> Gnu radio website. I can write simple blocks in C++, compile it and
> install it to it usable in Gnuradio company.
>
> But for some complex block, I want to implement them based on the
> gnuradio build-in blocks, for example, clock_recovery_mm_ff. So I make
> a new block in my out-of-tree module and try to first "copy" the
> build-in block into my out-of-tree module.
>
> I changed the following 4 files in my OOT module to match the
> corresponding files of the build-in block:
>
> lib/my_block_impl.cc  
> lib/my_block_impl.h
> include/my_block.h
> grc/my_block.xml
>
> In each file, I changed all the "clock_recovery_mm_ff" into "my_block".
>
> I can successfully make and install the block without error and
> warring. But when I try to run the grc graph, an error happens. 
>
> AttributeError: 'module' object has no attribute 'my_block'.
>
> Anyone can tell me what I should do to correct this error? Is there
> any other files I should change?
>
> When I make simple blocks by myself, I only change this 4 files and it
> works.
>
> Best regards,
>
> Su Li
>
>
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> Discuss-gnuradio@gnu.org
> https://lists.gnu.org/mailman/listinfo/discuss-gnuradio

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